Valve-closer.



M. N. PLAYFAIR.

VALVE CLOSER.

APPLICATION FILED DEC-27.1917.

Patepnted Oct. 1, 1918.

INVENTOR Y E N E A WITNESSES arun rarer...

MEIRVIL N. PLAYFAIR, OFALMONTE, ONTARIO, CANADA.

VALVE-CLOSER.

To all whom it may concern:

. ed certain new and useful Improvements in Valve-Closers, of which thefollowing is a specification.

This invention relates to an improved device for turning a valve such asused in connection with a steam or hot water'boiler, principal referencebeing'had to the valve used at the water glass. It often happens that awater glass will break and it is impossible to turn the valve withoutburning the hand. With this invention, the valve can he'turned and shut0E without it being necessary .to approach close to the valve thus doingaway with the danger of burning or scalding by hot water or steam. Thisattachment willbe mounted upon the valve stem in place of the usual handwheel and is so constructed that the housing holding the sprocket chainin place upon the pinion or sprocket wheel will be held in the properposition of its own weight.

This device will be further so constructed that it does not require anyspecial construction of valve thus permitting it to be used inconnection with valves already installed.

This invention is illustrated in the accompanying drawings, whereinFigure 1 is a view showing the housing in front elevation,

Fig. 2 is a side elevation of the housing shown in Fig. 1, v

Fig. 3 shows a front elevation and a side elevationof the forward wallof the housing,

Fig. 4: shows a front elevation and a side elevation of the sprocketwheel mounted in the housing, 7

Fig. 5 is a vertical sectional view showing the attachment in place upona valve stem shown in elevation, and

Fig. 6 is a front elevation showing the attachment in place.

This attachment is to be mounted upon a valve stem 10 and includes ahousing 11 having side walls 12 extending about its upper portion andprovided with sockets 13 to receive fastener screws 14 holding a forwardwall 15 in place. This forward wall 15 has a central portion cut out asshown at 16 thus providing an opening, the purpose of which will behereinafter brought out. This housing has the lower portion of its inneror Specification of Letters Patent.

Patented @ct. i, 112th.

Application filed December 2?, 1917. Serial No. 269,189.

rearwall thickened to provide a weight 1'? serving to retain the housingin the position. shown 1n Fig. 5 upon the valve stem 10, the upperportion of the weight or thickened sec-- tion of the rear wall beingprovided with a passage 18 through which the valve stem 19 will pass. Apinion or sprocket wheel 19 is provided with a squared center opening 20to receive the reduced and squared end per-- tion 21 of the valve stem10 thus rigidly mounting thissprocket wheel upon the valve stem in placeof the usual turning head when the sprocket wheel isput in place and thesecuring nut 22 tightened. A turning key re 23 extends through thecutout or opening 1% and is connected with the sprocket wheel by screwsor other fasteners 24 which pass through the seat 25 of the key. It willthus be seen that under ordinary circumstances, the valve may be openedand closed through the medium of this key 23 in. the manner that a valvewould be opened or clos through the medium oithe turni head. In order topermit the vaive ta turned from a point at a distance fro-in water glassin case the glass should break, there has been provided a sprocket chain26 which passes about the sprocket wheel 19 and may be led to any pointdesired. grasping the sprocket chain drawing longitudinally, thesprocket wheel and valve stem can be rotated, thus closing t'L va andshutting oif the steam or water when glass bursts. This sprocket chainconnected at its ends to provide a chain so that the valve can he compRy shut ofi'.

It will thus be seen that there lie-shear. provided an attachment for avalve so con 2- structed that the valve may he safely shut efi When theglass breaks and further that has been provided an attachment which canbe put in place upon a valve of a conve tional construction and furtherthat there has been provided an attachment including a housing whichwill serve as a 'uide to retain the sprocket chain upon t e sprocketwheel which housing will he so constructed and mounted that it will-heretained in the its and having its lower end pcrtien weighted to retainthe housing in a set pesiticn uponthe stem, 2. sprocket wheel rigiduponthe 3 1e heusing the ferward mu having its center portion revide apassage, e turning key T'dgh the passage and secured eiz wheel, and esprocket chainumuggh the housing and having gement' with the links ofat-ien of :1 valve stem, e 110118- 011 me valve stem and having its anthickened t0 provide a, Weight hens: in a set gosieion, the of ihehousing being provided a forward Well cennected mxiis and positioned inspaced We lower poriien of the housing, heel rigid upon. the Valve stemensing', and a sprocket chain the eprocket Wheel and ex- 1 1e Imus-singbeneath the end side wells.

stem, 2L heusing loose upon the a e eee valve stem end having a forwardWall previded with a cutout, a, sprocket Wheel rigid upon the valve stemWithin the heusing, a, turning key extending,threugh the cutout ef theforward Well and eenneeted with the sprocket Wheel and a, sprocket chainextending about the sprocket Wheel Within the housing and bending fromthe heusing,

The cemimmiien 0E a rotatable valve stem, a turning; Wheel fixed "sowere "with said stem 2m actuating chain engaged with said wheel, and ehouein loesely meunted on said stem and ind-using said Wheel to retainthe ch aim in engagement therewith; said housing having; the fe-rwardWell thereof removable to give access be file interier thereof Intestimony whereof 1 efiix my signature in presence of ewe witnesses.

MERVIL N, PLAYFAER.

Wm. 60mm BERT 1%.. GUNN.

